Which inspection term is used for soil that is protruding from the face of an excavation into the excavation?

The term that best describes soil protruding from the face of an excavation into the excavation itself is "bulging." This phenomenon typically occurs due to pressure or instability in the surrounding soil, which causes the earth to push outward as it loses its equilibrium. When soil bulges, it can indicate that the slope may be at risk of collapse or failure, making it crucial for safety during excavation work.

In contrast, heaving refers to upward movement of the soil, usually in reaction to moisture changes or frost, rather than bulging into the excavation. A fissure describes a crack or fracture in the ground, which doesn't necessarily pertain to soil material protruding outward. Boiling, on the other hand, is a term mostly used in contexts related to the movement of water through the soil, often seen in saturated conditions, and does not apply to soil protrusion. Understanding these specific terms is vital for recognizing signs of soil stability and ensuring safe excavation practices.